IBM 21Y Manual Do Utilizador

 Installing options

There is one keyboard port on the rear of the server.

Note: If you attach a standard (non-USB) keyboard to the 

keyboard connector, the USB ports and devices will 
be disabled during the power-on self-test (POST).

The following table shows the pin-number assignments for 
the keyboard connector on the rear of the server.

The system board has one auxiliary-device port that sup-
ports a mouse or other pointing device.

The following table shows the pin-number assignments for 
the auxiliary-device connector on the rear of the server.

13

Horizontal synchronization (Hsynch)

14

Vertical synchronization (Vsynch)

15

DDC SCL

Table 9. Keyboard connector pin-number assignments  

1

I/O

Data

2

N/A

Reserved

3

N/A

Ground

4

N/A

+5  V  dc

5

I/O

Keyboard clock

6

N/A

Reserved

Table 10. Auxiliary-device connector pin-number 
assignments  

1

Data

2

Not connected

Table 8. Video-port connector pin-number assignments 

6

4

2

1

3

5

6

4

2

1

3

5